Why is my BLU Studio G touch screen sensor way off?

It seems that when I go to touch somewhere specific on my screen, it registers my touch as somewhere completely different than where I had planned. I've done the general ideas to fix, such as rebooting my phone, cleaning out excess files, but it still occurs. And no, I don't just have big thumbs.

Go to About submenu. In some devices the About submenu will be under “More”/”General” submenu. On some other devices (mostly HTC devices you will have to goto Settings> About> Software Information> More)

Now scroll to “Build Number” and tap it 7 times.

After tapping 7 times you will see an alert saying “You are now a developer”/”Developer mode has been enabled”.

Now if you go to your Settings menu, you will see the developer options submenu over there.

enable "Show visual feedback for touches" or pointer location

now you can see the input identify by the device when you touching some where in the touch screen and it recognized defferant place, you should have to replace new touch pad.